Wrench.



No. 779,489. PATENTED JAN. 10, 1905. M. G. MORRISON.

WRENCH.

APPLICATION FILED JUNE 11,1904.

2 SHEETS-SHEET 1.

24 v I I flark (Mforrzsmu Witnesses Inventor;

Attorneys N0. 779,489. PATENTED JAN. 10, 1905. M. G. MORRISON.

WRENCH.

APPLIUATION FILED JUNE 11, 1904.

Z SHEETS-SHEET 2.

Witnesses v'en or.

b9 W I I Attorneys Patented January 10, 1905.

PATENT OFFICE.

MARK G. MORRISON, OF BAR HARBOR, MAINE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 779,489, dated January 10, 1905.

Application filed June 11, 1904. Serial No. 212,151.

To all whom it may concern.-

Be it known that 1, MARK C. MORRISON, a citizen of the United States, residing at Bar Harbor, in the county of Hancock and State of Maine, have invented a new and useful Wrench, of which the following is a specification.

This invention relates to wrenches of the class known as quick-action, and has for its object to simplify and improve the construction and produce an implement of this character inexpensive to manufacture, strong and durable, eiflcient in action. and which may be adapted to all the various sizes required in such implements.

ith these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters, is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, as various changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing from the principle of the invention or sacrificing any of its advantages, and the right is therefore reserved of making all the changes and modifications which fairly fall within the scope of the invention and the claims made therefor.

In the drawings thus employed, Figure 1 is a side elevation, partially in section, of the improved wrench. Figs. 2 and 3 are perspective vlews ofthe two body portions or casings detached. Fig. 4 is a transverse section on Figs. 2 and 3 of the separable handle or casing forming members employed in the construction shown in Fig. 8. Fig. 11 is a view of the threaded block employed in the modified construction shown in Fig. 8. Fig. 12 is a transverse section of the stationary jaw member on the line 9 9 of Fig. 8.

The wrench includes aflat stock 10, having two curved edges on which are formed screwthreads. At one end of the stock is secured a clamping-jaw 11.

Mounted slidably upon the stock 10 is a movable jaw 13, through which the stock is free to slide, but cannot be rotated thereon, as will be obvious because of its flat sides.

Extending from the jaw 13 is a hub 14, having a lateral flange 15 at its free end and with the hub enlarged for a portion of its circumference uniformly with the flange 15, whereby spaced stop-shoulders 16 17 are formed extending longitudinally of the hub and between the jaw 13 and flange 15, the object to be hereinafter explained.

Within the rear side of the jaw member 13 an annular channel 34 is formed and embracing the opposite sides of the stock 10, and extending below the same are two half casings or shells 21 22, each having a half-circular rib 35 36 for rotativel y engaging the channel 3 1. The shells 21 22 are also provided, respectively, with semicircular recesses or sockets 3O 31 to receive the sleeve or hub 14, depending from the jaw member 11, the recess 31 being enlarged, as indicated at 39, whereby shoulders 32 33 are formed for engaging the shoulders 16 17 as the hub is oscillated, and to thus limit the movement, as hereinafter explained. The shells 21 22 are semicircular, so that when united they form a complete circle and with the lower portions larger than the upper portions, whereby shoulders 10 41 are formed intermediately of the shells. The upper portions of the interiors of the shells are provided with threads 12 43, the threaded sections extending only partially around the interiors of the shells at each side, as shown in Fig. 4:, which represents a transverse section of this portion of the device, leaving smooth unthreaded portions 4 1 15 at opposite sides, the unthreaded portions being slightly wider than the smallest diameter of the stock 10, so that when the united shells 21 22 are turned into one position the threads 12 in the same will engage the threads 4:2 4:3 in the shells and lock the same to the stock, and then when the shells are rotated onefourth a revolution the threads of the stock will come opposite the unthreaded portions of the shells and release the stock and permit it, together with its jaw 11, to be freely moved longitudinally of the shells, as hereinafter more fully explained. The exteriors of the shells may be in any desired shape in the present instance being provided with wooden filling members 46 47, secured to each other and to the shells by a ferrule or cap 24, secured by screws or other suitable means. The upper ends of the wooden sections 46 47 are preferably provided with semicircular ribs 49 50, engaging corresponding grooves in the shell members 21 22, while the latter are further secured by a pin or stud 51 on one member entering a corresponding aperture in the other member.

If preferred, a band 52 maybe substituted for the ribs 49 50 and the corresponding grooves in the shell members; but this would not be a departure from the spirit of the invention.

A stop-disk 53 is attached to the lower end of the stock 10 to travel in the lower enlarged portions of the interior'of the shell members and to engage the shoulders to limit the upward movement of the stock, and prevent it from being detached entirely from the shells.

The relative sizes of the space between the shoulders 16 17 and the space within the recesses 30 31 not occupied by the filling portion will be so proportioned that they will permit the connected shells 21 22 to be rotated one-fourth of a revolution only in each direction, so that the shells and handle portion can be rotated only far enough to bring the stock in proper position to be either locked fast to the shells or released therefrom, as will be obvious. By this means it is obvious that a simply-constructed and efiicient quick-action wrenchis produced which may be quickly set to any desired size of nut and then as quickly locked for action in the required position.

In Figs. 7 to 11, inclusive, certain modified forms in the construction are shown, which may be employed under certain circumstances, if required, but are not a departure from the principle of the invention, as substantially the same results are produced by substantially the same means. In the modified construction the mutilated threads are formed in a block 18, which is embedded in cavities in the inner adjacent faces of the shell members 21 22 and preferably provided with threaded studs 25 26, extending through the shell members and secured by nuts 27 28 outside the same, the studs thus serving to bind the shells and block together, as will be obvious. In the modified construction also the amount of material between the stop-shoulders 16 17 is greater, which may be thus arranged under some circumstances, if required.

A binder screw or rivet 23 may be inserted through the ferrule or cap 24,'the terminals of the sl1ells,and wooden members,if required.

The parts may be of any required size or material and adapted for all the uses of which adjustable wrenches are generally employed.

Having thus described the invention, what is claimed is 1. In a wrench, an outer jaw, a flat stock secured thereto and provided with a pair of curved and threaded faces, an inner jaw having an opening for the passage of the stock, said inner jaw having an extended hub or collar of approximately cylindrical form. a portion of the periphery of which is recessed or cut away to form at the inner end an annular flange, and a pair of shoulders extending from the flange to the jaw, said. shoulders being parallel with the longitudinal plane of the stock, a sectional handle having an annular groove for the reception of the annular flange and provided withstop-shoulders for engagement with the shoulders of said hub or collar, a mutilated female thread carried by the sectional handle for the reception of a threaded stock, and means for securing the sections of the handle together, substantially as specified.

2. In wrench construction, an outer jaw, a flat stock secured thereto and provided with two curved and threaded faces, an inner jaw having an integral extended hub or collar that is recessed to form a terminal annular flange, and a pair of shoulders, the latter being parallel with the longitudinal plane of the stock, a sectional handle having an annular groove for the reception of the flange and provided with stop-shoulders for engagement with said parallel shoulders, said sectional handle being further provided with a non-circular recess immediately adjacent to the annular groove, a non-circular nut seated within said recess and having a mutilated female thread for the reception of the threaded stock, threaded pins projecting from the opposite sides of the nut and extending through openings formed in the sections of the handle, nuts carried by said threaded pins and serving to hold the sections of the handle together, a stopdisk secured to the end of the stock, and an annular shoulder formed in the handle for limiting movement of said disk and the stock to which it is attached.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

MARK C. MORRISON.

Witnesses:

J oHN N. ROBERTS, WALTER E. SMITH.

ICC

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